Voter Demographics

Who can vote in 2027, by generation and age band: 2019 census age structure projected to election day, joined with the IEBC 2022 register.

Scope

Population (2019)

987,625

Registered voters (2022)

479,401

Voting-age by Aug 2027 (est.)

779,798

Gen-z eligible 2027 (est.)

307,117

39.4% of the 2027 voting-age est.

Gen-z (born 1997-2012)

307,117 eligible

≈ 188,808 of today's registered voters, if registration mirrors the age structure.

Youth (18-34 in 2027)

365,381

The bloc every 2027 campaign is chasing.

Millennials (born 1981-1996)

209,275

Peak-turnout generation in Makueni.

Age structure · Makueni

2019 census population by five-year band.

0-4

96,425

5-9

111,402

10-14

136,393

15-19

122,859

20-24

79,775

25-29

65,884

30-34

66,259

35-39

56,527

40-44

49,928

45-49

46,855

50-54

32,560

55-59

29,243

60-64

26,824

65-69

22,999

70-74

17,029

75-79

9,371

80-84

7,407

85-89

4,165

90-94

3,408

95-99

1,459

100+

853

Voters by constituency and ward · Makueni

County age share (39.4%) applied to each seat's 2022 registered voters, an estimate, since sub-county age data isn't published.

Loading map…

Estimated 2027 voting-age population by ward (county age share × 2022 register). Darker = more voting-age residents.

Methodology & sources

Age structure: KNBS 2019 Census (via OCHA COD-PS, data.humdata.org/dataset/cod-ps-ken), from the 2019 census county tables (KNBS via OCHA).
Registered voters: IEBC 2022 General Election register (per ward), the same figures behind every seat page here.
2027 projections age the census cohorts forward to August 2027 (whoever was N years old in 2019 is N+8), ignoring mortality and migration; treat them as estimates.
Gen-z = born 1997-2012; those born by August 2009 are eligible in 2027. Constituency and ward figures apply the county's age share to the seat's registered voters.
These are eligibility and registration figures, never turnout predictions.